WO2021114696A1

WO2021114696A1 - Thermosensitive magnetic-control thermostat

Info

Publication number: WO2021114696A1
Application number: PCT/CN2020/107282
Authority: WO
Inventors: 冯力
Original assignee: 佛山市川东磁电股份有限公司; 佛山市程显科技有限公司
Priority date: 2019-12-11
Filing date: 2020-08-06
Publication date: 2021-06-17
Also published as: CN110985188A

Abstract

Disclosed is a thermosensitive magnetic-control thermostat. The thermosensitive magnetic-control thermostat comprises a tubular shell (1), hollow annular protrusions (2) arranged on an inner wall of the shell (1), and a movable swing plate (3) connected into the shell (1) by means of a pivot, wherein the movable swing plate (3) is located between the protrusions (2); the longitudinal section of the movable swing plate (3) is Z-shaped, and the movable swing plate comprises an upper swing plate (31), a bearing portion (32) and a lower swing plate (33), which are sequentially connected; when the upper swing plate (31) is horizontally placed, the upper swing plate (31) is magnetically attracted to the upper end faces of the protrusions (2) by means of a plurality of thermosensitive magnetic-attraction assemblies (4); when the lower swing plate (33) is horizontally placed, the lower swing plate (33) is magnetically attracted to the lower end faces of the protrusions (2) by means of the plurality of thermosensitive magnetic-attraction assemblies (4); and the thermosensitive magnetic-attraction assemblies (4) can change a magnetic attraction capacity according to the ambient temperature. The thermosensitive magnetic-control thermostat is simple and clever in terms of structure, simple in terms of control manner, strong in terms of working reliability, convenient to install, easily manufactured, low in terms of cost and can bring good social benefits to the development and application of heat energy conservation.

Description

Thermal-sensitive magnetic-controlled thermostat

Technical field

The invention relates to the technical field of thermal energy control, in particular to a thermosensitive magnetic control thermostat.

Background technique

Some industrial control and heat control occasions often need to use thermostats (also called thermostats). For example, in the northern winter central heating equipment, the valve must be opened after the water is heated to a certain temperature, which can be very effective. Good to reduce heat loss and reduce boiler fuel energy consumption.

Another example: when a car diesel internal combustion engine is cold-started at sub-zero temperatures in the northern winter, it is difficult to start because the temperature of the engine body is low. The engine needs to consume a certain amount of fuel to warm up. One of the reasons is that the ignition temperature of diesel is high, and when the temperature is low, the viscosity of diesel is large and it is not easy to atomize into the cylinder, and it cannot mix well with air. The cylinder block needs to be preheated to a certain temperature before the diesel can be completely burned. Therefore, a thermostat is installed in the cooling circuit of the car. Its function is to close the cooling circuit with the radiator when the engine is cold started, so that the temperature of the engine block rises rapidly and the diesel reaches complete combustion. When the temperature of the engine block reaches 80 The cooling pipe valve should be opened at about ℃, which can shorten the start-up time and reduce diesel consumption.

At present, paraffin-type thermostats are commonly used in automobile engine thermostats. Its structure principle is: when the cooling temperature is lower than the specified value, the thermostat body's fine paraffin wax is solid, and the thermostat valve body is closed under the action of the spring. When the coolant temperature reaches the specified value, the paraffin wax begins to melt gradually Turns into liquid, the volume begins to increase and compresses the rubber tube to make it shrink. The rubber tube acts on the upward force of the push rod while shrinking. The push rod has a downward thrust on the valve body to open the valve, and the coolant flows through and enters Cooling cycle.

However, energy-saving temperature control valves based on the above applications have complex structures, high manufacturing costs, troublesome application control, and high failure rates. Therefore, there is an urgent need for a thermostat that has a simple structure, is easy to manufacture, and is easy to control and apply.

Summary of the invention

In view of the above-mentioned shortcomings of the prior art, the purpose of the present invention is to provide a thermosensitive magnetically controlled thermostat, which aims to use the temperature to change the magnetic attraction of the magnet to adjust the thermostat's on-off function.

In order to achieve the above objectives, the present invention adopts the following technical solutions:

A thermosensitive magnetic control thermostat, comprising a tubular casing, a hollow annular protrusion arranged on the inner wall of the casing, and a movable swing plate pivotally connected to the inside of the housing; the movable swing plate is located in the casing Between the protrusions, the vertical section of the movable swing plate is Z-shaped, including an upper swing plate, a receiving part, and a lower swing plate that are connected in sequence. When the upper swing plate is placed horizontally, the upper swing plate passes through multiple sets of thermal magnetic attraction components It is magnetically attracted to the upper end surface of the protrusion. When the lower swing plate is placed horizontally, the lower swing plate is magnetically attracted to the lower end surface of the protrusion through multiple sets of thermal magnetic attraction components. The thermal magnetic attraction component can be changed according to the ambient temperature. Magnetic attraction ability.

The housing is tubular, the movement axis of the receiving portion is perpendicular to the axis of the housing but does not intersect, the movement axis of the receiving portion is offset to one side of the housing axis, and the protrusion is provided with two symmetrical The two notches divide the protrusion into a first arc segment and a second arc segment that are concentrically arranged on the inner wall of the shell, and the arc length of the first arc segment is greater than the arc length of the second arc segment, The receiving portion is located between the first arc segment and the second arc segment, the upper swing plate and the lower swing plate are both semicircular, and the upper swing plate can be tightly connected with the top of the first arc segment, so The bottom swing plate can be tightly connected with the bottom of the second arc segment.

Each group of thermosensitive magnetic attraction components includes thermosensitive soft magnets arranged on the movable swing plate and hard magnets arranged on the protrusions, and the thermosensitive soft magnets and hard magnets in each group are arranged correspondingly.

The upper swing plate and the lower swing plate are provided with mounting holes for installing the thermal soft magnet, the thermal soft magnet is installed in the mounting hole, and the magnetic attraction end of the thermal soft magnet is flush with the port of the mounting hole.

The protrusion is provided with a through hole for installing a hard magnet, and the two ends of the hard magnet are correspondingly flush with the two ports of the through hole.

The number of thermal magnetic attraction components between the upper swing plate and the protrusions is the same as the number of thermal magnetic attraction components between the lower swing plate and the protrusions.

All the thermal magnetic attraction components arranged between the bottom swing plate and the second arc segment are distributed at equal angles in the circumferential direction.

Among all the thermal magnetic attraction components arranged between the upper swing plate and the first arc segment, most of the thermal magnetic attraction components are concentratedly arranged in the middle of the first arc segment.

The intersection of the upper swing plate and the receiving portion forms a first vertical inner angle, and the first vertical inner angle can fit the upper corners of the two ends of the first arc segment, and the intersection of the upper swing plate and the receiving portion forms a first vertical inner angle. Two vertical interior angles, the second vertical interior angle is attached to the lower corners of the two ends of the second arc segment, the upper corners of the two ends of the first arc segment and the lower corners of the two ends of the second arc segment All set a limited chamfer.

The receiving part is connected with the housing through a pin shaft, the movable swing plate can swing relative to the housing, and the housing is provided with an eccentric shaft hole for mounting the pin shaft.

Beneficial effects:

The invention provides a thermosensitive magnetic control thermostat. Compared with the existing thermostat, the thermosensitive magnetic material's ferromagnetism is changed by temperature to control the switch of the thermostat. Due to the movable pendulum The receiving part in the plate is eccentrically arranged, so that the area of the upper swing plate is larger than the area of the lower swing plate. When the thermostat is closed, the pressure of water on the upper swing plate is greater than the pressure on the lower swing plate. Under the magnetic attraction of the suction assembly, the water pressure is not enough to push the movable swing plate to swing. Only when the thermal soft magnet loses its ferromagnetism, the water pressure can push the movable swing plate and make the water flow into other devices. When there is no water pressure, the temperature of the thermosensitive soft magnet gradually drops below its Curie temperature, the ferromagnetism of the thermosensitive soft magnet is restored, the thermosensitive soft magnet and the hard magnet form a magnetic attraction, and due to the upper swing plate The weight is greater than the gravity of the lower swing board. Under the action of the lever balance, the upper swing board approaches the arc section and the lower swing board approaches the second arc section. The movable swing plate flips to a horizontal state again under the double force, and the thermostat is closed. It can be seen that the thermal magnetic control thermostat has a simple and ingenious structure, simple control method, strong working reliability, convenient installation, easy manufacture, and low cost, which can bring good social benefits to the development and application of thermal energy saving.

Description of the drawings

Fig. 1 is a structural schematic diagram of the thermosensitive magnetic control thermostat provided by the present invention in a closed state.

Fig. 2 is a structural schematic diagram of the thermosensitive magnetic control thermostat provided by the present invention in an open state.

Fig. 3 is a cross-sectional view of the thermosensitive magnetic control thermostat provided by the present invention in an open state.

Figure 4 is a top view of the thermal magnetic control thermostat provided by the present invention.

Fig. 5 is a perspective view of the housing in the thermosensitive magnetic control thermostat provided by the present invention.

Fig. 6 is a three-dimensional view of the movable swing plate in the thermal magnetic control thermostat provided by the present invention.

Detailed ways

The present invention provides a thermosensitive magnetic control thermostat. In order to make the objectives, technical solutions and effects of the present invention clearer and clearer, the present invention will be further described in detail below with reference to the drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, and are not used to limit the protection scope of the present invention.

In this article, the present invention provides a thermosensitive magnetic control thermostat, and the direction indicated by the arrow in Fig. 1 and Fig. 2 is the direction of water flow.

Please refer to Figures 1 to 6, the present invention provides a thermosensitive magnetic control thermostat, including a tubular housing 1, a hollow annular protrusion 2 arranged on the inner wall of the housing, and a pivot connected to the housing The movable swing plate 3 inside; the movable swing plate 3 is located between the protrusions 2, and the longitudinal section of the movable swing plate is Z-shaped, and includes an upper swing plate 31, a receiving portion 32, and a lower swing plate 33 that are connected in sequence. When the upper swing board is placed horizontally, the upper swing board 31 is magnetically attracted to the upper end surface of the protrusion 3 through multiple sets of thermal magnetic attraction components 4, and when the lower swing board 33 is placed horizontally, the lower swing board 33 passes through multiple sets of thermal magnetic attraction components. The suction component 4 is magnetically attracted to the lower end surface of the protrusion 2, and the heat-sensitive magnetic attraction component 4 can change the magnetic attraction ability according to the ambient temperature. Here, the housing 1 can be designed as a round tube or a square tube according to production requirements. Similarly, the hollow annular protrusion and the movable swing plate are designed to match the shape of the housing, and the change in the shape of the components does not affect the original The implementation effect of the invention.

Here, please refer to Figures 1 to 3, each group of thermal magnetic attraction assembly 4 includes a thermally sensitive soft magnet 41 arranged on the movable swing plate and a hard magnet 42 arranged on the protrusion. The thermally sensitive soft magnet in each group The magnet 41 and the hard magnet 42 are arranged correspondingly. The thermosensitive soft magnet 41 is mainly composed of thermosensitive metal material and thermosensitive ferrite. The ferromagnetic substance in the thermosensitive soft magnet will lose iron when the temperature is higher than a certain temperature (the transition temperature is the Curie temperature point). Magnetic and paramagnetic. The ferromagnetic substance in the thermosensitive soft magnet recovers its ferromagnetism when the temperature is lower than a certain temperature (the transition temperature is the Curie temperature point). When the thermosensitive soft magnet 41 has ferromagnetism, the thermosensitive soft magnet 41 and the hard magnet 42 are attracted to each other under the action of magnetic force. When the thermosensitive soft magnet 41 loses ferromagnetism, the thermosensitive soft magnet 41 and the hard magnet 42 cannot be magnetically attracted between the magnetic forces. Those skilled in the art can adjust the ratio of the materials in the thermal soft magnet to set the Curie temperature point of the thermal soft magnet.

In this embodiment, referring to FIG. 5, the housing 1 has a circular tube shape, the movement axis of the receiving portion 32 is perpendicular to but not intersecting with the axis of the housing 1, and the movement axis of the receiving portion 32 is offset from the housing 1 On one side of the axis (ie eccentrically arranged), the protrusion 2 is provided with two symmetrically arranged notches 21, and the two notches divide the protrusion into a first arc segment 22 and a second arc section concentrically arranged on the inner wall of the housing. The arc segment 23, the arc length of the first arc segment 22 is greater than the arc length of the second arc segment 23, the receiving portion 32 is located between the first arc segment 22 and the second arc segment 23, and the upper The swing plate 31 and the lower swing plate 33 are semicircular, the upper swing plate 31 can be tightly connected with the top of the first arc segment 22, and the lower swing plate 33 can be tightly connected with the bottom of the second arc segment 23.

Please refer to Figure 1 and Figure 2. For example, when the thermostat is applied to heating equipment, install the thermostat at the outlet of the hot water pipe of the heating equipment. The change of water temperature can affect the magnetic characteristics of the thermal soft magnet. When the water temperature is low At the Curie temperature point of the thermal soft magnet, the thermal soft magnet 41 installed on the movable swing plate 3 and the hard magnet 42 installed on the protrusion 2 are attracted to each other under the action of magnetic force, and the movable swing plate 3 Close tightly. When the water temperature gradually rises, the temperature of the thermal soft magnet 41 also rises. When the thermal soft magnet 41 reaches or exceeds its Curie temperature, the magnetic force of the thermal soft magnet disappears. Under the action of the pressure, it is pushed from the horizontal state to the inclined state.

Please refer to Figures 1 and 2, because the receiving part in the movable swing plate 3 is eccentrically arranged, so that the area of the upper swing plate 31 is larger than the area of the lower swing plate 33. When the thermostat is closed, the water flow acts on the upper swing plate 31. The pressure is greater than the pressure acting on the lower swing plate 33, but under the magnetic attraction of all the temperature-sensitive magnetic components 4, the water pressure is not enough to drive the movable swing plate 4 to swing. Only when the thermal soft magnet 41 loses its ferromagnetism, the water pressure Only then can the movable swing plate 3 be pushed open so that the water flows into other devices. When there is no water pressure, the temperature of the thermosensitive soft magnet 41 gradually drops below its Curie temperature, the ferromagnetism of the thermosensitive soft magnet 41 is restored, and the thermosensitive soft magnet 41 and the hard magnet 42 form a magnetic attraction, and due to The weight of the upper swing plate 31 is greater than the gravity of the lower swing plate 33. Under the action of the lever balance of the movable swing plate 3, the upper swing plate 31 approaches the first arc segment, and the lower swing plate 33 approaches the second arc segment 23. The movable swing plate 3 flips to a horizontal state again under the double force, and the thermostat is closed. Compared with the existing thermostat, the thermostat provided in this embodiment has a simple and ingenious structure, simple control mode, strong working reliability, convenient installation, easy manufacture, low cost, and can bring great benefits to the development and application of thermal energy saving Social benefits.

Specifically, referring to FIG. 6, the upper swing plate 31 and the lower swing plate 33 are provided with mounting holes for installing the thermal soft magnet 41, and the thermal soft magnet 41 is installed in the mounting hole. The magnetic end is flush with the port of the mounting hole 34. The thermal soft magnet 41 and the mounting hole 34 have an interference fit, so that the thermal soft magnet 41 cannot be separated from the mounting hole 34. In order to facilitate the installation of the thermal soft magnet 41, the mounting hole 34 is generally set as a through hole. Of course, the mounting hole 34 may also be a blind hole. The magnetic end of the thermal soft magnet is flush with the port of the mounting hole, so that when the thermostat is closed, the upper swing plate and the lower swing plate of the movable swing plate can fit the protrusion as much as possible to prevent the thermal soft magnet from interfering to form a gap .

Preferably, the protrusion 2 is provided with a through hole 24 for installing the hard magnet 42, and the two ends of the hard magnet 42 are correspondingly flush with the two ports of the through hole 24. The through hole 24 and the hard magnet 42 have an interference fit, so that the hard magnet 42 cannot be separated from the through hole; and the two ends of the hard magnet are flush with the two ports of the through hole, so that the upper swing of the movable swing plate when the thermostat is closed The board and the lower swing board can be attached to the protrusions to prevent water flow from penetrating through the gap and ensure the closing and sealing of the thermostat.

In order to ensure that the weight of the thermally sensitive magnetic components on both sides of the movable swing plate is equal, the number of thermally sensitive magnetic components between the upper swing plate 31 and the protrusion 2 is equal to the number of thermally sensitive magnetic components between the lower swing plate 33 and the protrusion 2. The number of suction components is the same. In this embodiment, there are 10 sets of thermosensitive magnetic components 4 to ensure that when the thermostat is closed, the magnetic attraction force provided by the thermosensitive magnetic components 4 is greater than the water pressure, which improves the energy saving of the thermostat. Reliability.

Preferably, on the one hand, in order to make the weight distribution of the bottom swing plate 33 uniform without being biased toward one end, all the thermosensitive magnetic attraction components 4 arranged between the bottom swing plate 33 and the second arc segment 23 are distributed at equal angles in the circumferential direction. On the other hand, most of the thermally sensitive magnetic components in the thermally sensitive magnetic components between the upper swing plate 31 and the first circular arc section 22 are concentratedly arranged in the middle of the first circular arc section 22. Under the interaction of the two aspects, the center of gravity of the movable swing plate is better biased toward the end of the upper swing plate 31, so that the movable flip can make the upper swing plate and the lower swing plate closer to the convex when it relies on gravity to find its own balance. To ensure that the thermal magnetic attraction component can be magnetically attracted, and to ensure the smooth closure of the movable swing plate and the protrusion.

Preferably, referring to FIG. 1, the intersection of the upper swing plate 31 and the receiving portion 32 forms a first vertical inner corner 51, and the first vertical inner corner 51 can fit the upper corners of the two ends of the first arc segment 22 , The intersection of the upper swing plate 31 and the receiving portion 32 forms a second vertical inner corner 52, which fits with the lower corners of the two ends of the second arc segment, and both ends of the first arc segment The upper corner of the second arc segment and the lower corners of both ends of the second arc segment are both provided with a limit chamfer 53. By setting the first vertical internal angle and the second vertical internal angle, the sealing performance when the thermostat is closed is further improved, and water leakage is prevented. In addition, by setting the limit chamfering, on the one hand, the movable swing plate is prevented from interfering with the protrusion when it is turned, and on the other hand, the swing range of the movable swing plate is restricted to ensure that the movable swing plate does not exceed the range of movement that can be automatically closed.

Preferably, referring to Figures 5 and 6, the receiving portion 32 is connected to the housing 1 through a pin 6, the movable swing plate can swing relative to the housing, and the housing 1 is provided with an eccentric shaft hole for mounting the pin 6 11. The receiving portion 32 is provided with a receiving hole 32a for the pin shaft to pass through. During assembly, the pin shaft 6 passes through the eccentric shaft hole 11 and the receiving hole 32a in sequence, which is convenient for assembly. The bearing hole and the pin shaft are in interference fit, and the movable swing plate rotates smoothly and stably around the pin shaft.

It can be understood that for those of ordinary skill in the art, equivalent replacements or changes can be made according to the technical solution of the present invention and its inventive concept, and all these changes or replacements should belong to the protection scope of the present invention.

Claims

A thermosensitive magnetic control thermostat, which is characterized in that it comprises a tubular casing, a hollow annular protrusion arranged on the inner wall of the casing, and a movable swing plate pivotally connected to the inside of the casing; the movable pendulum The board is located between the protrusions. The longitudinal section of the movable swing board is Z-shaped, including an upper swing board, a receiving part, and a lower swing board connected in sequence. When the upper swing board is placed horizontally, the upper swing board passes through multiple sets of heat The sensitive magnetic attraction component is magnetically attracted to the upper end surface of the protrusion. When the lower swing board is placed horizontally, the lower swing board is magnetically attracted to the lower end surface of the protrusion through multiple sets of thermal magnetic attraction components, and the thermal magnetic attraction component can Change the magnetic attraction ability according to the ambient temperature.
The temperature-sensitive magnetically controlled thermostat according to claim 1, wherein the housing has a circular tube shape, the movement axis of the receiving part is perpendicular to the axis of the housing but does not intersect, and the movement of the receiving part The axis is offset to one side of the axis of the housing, the protrusion is provided with two symmetrically arranged notches, and the two notches divide the protrusion into a first arc segment and a second arc that are concentrically arranged on the inner wall of the housing Segment, the arc length of the first arc segment is greater than the arc length of the second arc segment, the receiving portion is located between the first arc segment and the second arc segment, the upper swing plate and the lower swing plate are both semicircular The upper swing plate can be tightly connected with the top of the first arc segment, and the lower swing plate can be tightly connected with the bottom of the second arc segment.
The thermosensitive magnetic control thermostat according to claim 1, wherein each group of thermosensitive magnetic components includes a thermosensitive soft magnet arranged on the movable swing plate and a hard magnet arranged on the protrusion, each The thermal soft magnets and hard magnets in the group are arranged correspondingly.
The thermal magnetic control thermostat according to claim 3, wherein the upper swing plate and the lower swing plate are provided with mounting holes for installing thermal soft magnets, and the thermal soft magnets are installed in the In the hole, the magnetic end of the thermal soft magnet is flush with the port of the mounting hole.
The thermal magnetic control thermostat according to claim 3 or 4, wherein the protrusion is provided with a through hole for installing a hard magnet, and both ends of the hard magnet correspond to the two ports of the through hole. level.
The thermal magnetic control thermostat according to claim 1, wherein the number of thermal magnetic attraction components between the upper swing plate and the protrusions and the thermal magnetic attraction between the lower swing plate and the protrusions The number of components is the same.
The temperature-sensitive magnetic control thermostat according to claim 6, wherein all the temperature-sensitive magnetic components arranged between the bottom swing plate and the second arc section are distributed at an equal angle in the circumferential direction.
The temperature-sensitive magnetic control thermostat according to claim 6, characterized in that, among all the temperature-sensitive magnetic components arranged between the upper swing plate and the first arc segment, most of the temperature-sensitive magnetic components Centrally arranged in the middle of the first arc segment.
The thermal magnetic control thermostat according to claim 2, wherein the junction of the upper swing plate and the receiving part forms a first vertical internal angle, and the first vertical internal angle can be connected to two points of the first arc segment. The upper corners of the ends are attached, and the junction of the upper swing plate and the receiving portion forms a second vertical inner angle, and the second vertical inner corner is attached to the lower corners of the two ends of the second arc segment, and the first circle The upper corners at both ends of the arc segment and the lower corners at both ends of the second arc segment are both provided with a finite chamfer.
The thermal magnetic control thermostat according to claim 1, wherein the receiving part is connected to the housing by a pin, the movable swing plate can swing relative to the housing, and the housing is provided with a pin for mounting The eccentric shaft hole.